According to aspects of the embodiments, a lighting fixture is designed to help prevent the accumulation of snow or ice on the light emitting face (e.g., lens) of the lighting fixture. The lighting fixture harvests both the light and heat generated by at least one light source, such as but not limited to at least one LED light source. The lighting fixture adopts a flip-mount light source mounting design in which one side of a passive heat exchanger is mounted or secured closely adjacent or proximate to the lens, and the light source is mounted or secured to another side of the passive heat exchanger. The heat generated by the light source is conducted by the passive heat exchanger to heat the lens. Additionally, the light emitted from the light source is redirected back through the passive heat exchanger and to the lens using a bundle of light fiber cables.

A light emitting assembly is provided, including: a light adjustment layer, where at least one first element whose transparency is adjustable is disposed at the light adjustment layer; and a first light source, disposed on a side of the light adjustment layer, and configured to irradiate light on the at least one first element. A method for controlling a light emitting assembly and an electronic apparatus are further disclosed, relate to the field of display technologies, and may be applied to an intelligent vehicle or a new energy vehicle.

A light source device includes: a first light source; first cylindrical lenses; a light beam merging unit disposed to narrow a width in a first direction of a light flux emitted from the first light source by allowing partial light from the first cylindrical lenses to pass through the light beam merging unit and reflecting remaining light; and a condenser lens configured to condense light emitted through the light beam merging unit. The first light source includes light emitting elements disposed side by side in the first direction in a first column, and collimator lens parts disposed corresponding to the light emitting elements in the first column. Each of the light emitting elements in the first column includes a first emitter that emits first light, and a second emitter that emits second light. Each of the collimator lens parts allows transmission of the first light and the second light.

A lighting system includes a light source unit and a light-distributing member. The light source unit includes a laser light source. The light-distributing member has the function of reflecting incident light that has been emitted as a beam of light from the light source unit toward a target space. The light-distributing member transforms the incident light into lighting light having a different light distribution property from the incident light and distributes the lighting light over the target space.

A light-emitting diode light string with an optical fiber includes a first wire, a second wire, a light-emitting diode, and an optical fiber. The light-emitting diode is connected in parallel between the first wire and the second wire, which has a light-emitting surface, and when activated, generates a light at the light-emitting surface to have a first brightness. The optical fiber has a light entering end, a side light exiting portion, and a light exiting end. The light entering end is connected to the light-emitting surface, and the light entering end, the light exiting end, and the light-emitting surface are substantially aligned with a plumb line. The light has a second brightness at the light exiting end, the light has a third brightness at the side light exiting portion, the first brightness is substantially equal to the second brightness, and the second brightness is greater than the third brightness.

A light source device includes: a first light source; first cylindrical lenses; a light beam merging unit disposed to narrow a width in a first direction of a light flux emitted from the first light source by allowing partial light from the first cylindrical lenses to pass through the light beam merging unit and reflecting remaining light; and a condenser lens configured to condense light emitted through the light beam merging unit. The first light source includes light emitting elements disposed side by side in the first direction in a first column, and collimator lens parts disposed corresponding to the light emitting elements in the first column. Each of the light emitting elements in the first column includes a first emitter that emits first light, and a second emitter that emits second light. Each of the collimator lens parts allows transmission of the first light and the second light.

An illumination unit for illuminating an area of operation during open surgery. The illumination unit including: a body; a fiber bundle configured to guide light towards a distal end of the body, and a reflector body arranged at the distal end of the body. Where at least a part of the fiber bundle is guided inside the body along a longitudinal direction, the fiber bundle is split up into a plurality of optical fibers which form a fiber layer on an inner surface of the body, end faces of the plurality of optical fibers are arranged at the distal end of the body, the reflector body encloses the end faces of the plurality of optical fibers in a radial direction and extends distally beyond the distal end of the body in the longitudinal direction, and an inner surface of the reflector body is a reflective surface.